A plasmonic terahertz waveguide generation device

Abstract

The invention discloses a plasma terahertz waveguide generation device, which includes a microcontroller, a human-computer interaction module, a power supply, a high-voltage pulse power supply, a ground electrode, a dielectric plate, and a high-voltage pulse branch. The micro-via array of the board, one high-voltage pulse branch corresponds to one micro-via, and each high-voltage pulse branch includes a resistor, a high-voltage solid-state switch, a driving module and a needle electrode, and each needle electrode is connected from the upper surface of the dielectric board The surface is inserted into the corresponding micro-through hole, and the outer surface of the needle electrode is closely attached to the inner surface of the micro-through hole, and the ground electrode is closely attached to the lower surface of the dielectric plate. Both ends are sealed, and each micro-through hole contains working gas. The invention can realize the "electrically controlled" adjustment of the bandgap characteristics of the photonic crystal, and has the characteristics of fast dynamic response, reconfigurable and adjustable frequency bandwidth.

Description

technical field [0001] The invention belongs to the field of terahertz technology and discharge plasma technology, and in particular relates to plasma terahertz waveguide technology. Background technique [0002] Terahertz (THz) wave refers to the frequency of 0.1 ~ 10THz (wavelength 30 ~ 3000μm, 1THz = 10 12 Hz) range of electromagnetic waves. THz technology is widely used in many important fields such as biomolecular identification, material diagnosis, astronomical observation, atmospheric and environmental monitoring, wireless communication, national security and anti-terrorism. In the THz application system, the transmission channel of terahertz waves—the waveguide is an indispensable key part. [0003] Photonic crystals are artificial microstructures with periodic arrangements, which have the characteristics of photonic band gap and photonic localization, and can be used to make terahertz waveguides. In the photonic forbidden band of photonic crystals, electromagneti...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent application is that the medium used is alumina ceramics and nickel-zinc ferrite, and its dielectric constant and other parameters are fixed. It can only work in the X-band with a wavelength of 3cm, and the structure cannot be reconstructed. Only one form of waveguide that can realize T shape

The disadvantage of this patent is that the metal pillar needs to be inserted or pulled out of the photonic crystal structure through a mechanical device, the response speed is slow, continuous adjustment cannot be performed, the operation is complicated, and only linear waveguides can be realized.

The plasma discharge tube of this patent has a wall thickness of 1mm, an outer diameter of 12mm, and a length of 250mm, and is filled with argon gas with a pressure of 650Pa and a purity of 99.99%. When the discharge voltage is between 20-30kV, the plasma density changes Range is 10 11 cm -3 -9×10 11 cm -3 The disadvantage of this patent is that there is only one plasma defect, the working mode and range are fixed, and it can only realize the filtering function with a resonant frequency of 7.7GHZ-8.5GHz and a forbidden band width of 7.2GHz-10.5GHz

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